8 ms·
I could give two shits about the X1, but the new X260 can take 16GB of RAM and has an onboard ethernet port. Yes, please.
by alrs 11y ago
I could give two shits about the X1, but the new X260 can take 16GB of RAM and has an onboard ethernet port. Yes, please.
- scw 11y agoThe X220 takes 16GB, and an onboard gig-e Intel nic. It was released in 2011.
- lwf 11y agoThis. The X220 is still my day-to-day personal laptop, and I've yet to find anything else that's comparable (key feel, small size, durability, ease of service...)
- alrs 11y agoX250 can't do 16GB, sadly.
- blueyed 11y agoYou can get it directly from Lenovo.
- alrs 11y agoX220 doesn't have a high resolution screen available, which is why I'm still stuck on an x200s.
- elcct 11y agoWhat about RS-232 and LPT?
- lsc 11y agoI and most people in my job role carry usb -> DB9 rs232 dongles. doesn't work, of course, if you are trying to set up a serial console to debug the laptop, which is annoying, but it works fine for what we mostly use it for, which is to say, reading other serial consoles.
- pjc50 11y agoThey're obsolete for consumer hardware and take up a lot of space, while a physical gigabit network port is extremely useful for low-latency high-throughput communication, such as to NAS. (RS-232 is still somewhat useful for hobby embedded stuff, but everyone just buys FTDI clone USB-serial cables)
- monocasa 11y agoUnfortunately the FTDI stuff (really any USB<->UART converter) has latency issues in the embedded space. : \
- seiferteric 11y agoI was wondering, would it be possible to create a better converter that did usb -> rs232/parallel port that had a special driver to put timing info? At least for driving CNC motors with a parallel port, timing is critical, you could send the pulse signal along with a timing, like 1 @ t0, 0 @ t0+1us etc.. Reading would be similar. The chip on the converter would have an accurate clock and faithfully reproduce the desired signal.
- pjc50 11y agoIt could probably be done with isochronous mode (http://www.beyondlogic.org/usbnutshell/usb4.shtml#Isochronous http://www.beyondlogic.org/usbnutshell/usb4.shtml#Isochronou...), but realistically it's easiest to just delegate all the real-time stuff to a $1 microcontroller on the other end of the USB link.
- oxplot 11y agoAfter having a quick look at all the external interfaces of my laptop, the only one that has a predictable latency (that I know of) is the microphone/headphone jack. It should be fairly trivial to convert a serial digital data to an audio signal that can be reverted back on the other end. Of course, initially the jack latency needs to be measured (e.g. using a loop connection) and accounted for.
- RyJones 11y ago
- josteink 11y ago> I could give two shits about the X1 The X1 comes with an (included) external ethernet dongle which runs at full speed. That is to say: it's not a BW-limited USB-based adapter. I agree it's a bit silly to need a dongle, it seems to be quite a popular sacrifice (ref Macbook air) to help make laptops thinner. As this trend increased, I suspect we will start seeing USB-C (3.x) type networking kits becoming the standard for ethernet. Maybe some day even without the RJ45 connector.